Efficient combustion chamber and heating furnace

Abstract

The efficient combustion chamber comprises a primary combustion cavity and a secondary combustion chamber, a primary opening is formed in the upper end of the primary combustion cavity, and the secondary combustion chamber is arranged on the primary opening; the secondary combustion chamber comprises a hollow three-dimensional fire outlet and a cuboid fire outlet, the cuboid fire outlet is connected with the primary combustion cavity through at least one inclined plane, and the surface area of the cuboid fire outlet is smaller than that of the primary combustion cavity; air inlet holes are formed in the primary combustion cavity, the inclined plane and the cuboid fire outlet; the heating furnace comprises a furnace body and a furnace base connected to the lower portion of the furnace body, and a combustion chamber is arranged in the furnace body. An ash outlet is formed in the furnace base, and a material adding opening is formed in the furnace body; the lower portion of the primary combustion cavity is communicated with the ash outlet, and the side edge of the primary combustion cavity is communicated with the material adding opening. The air inlet is communicated with a secondary ventilation opening, and the secondary ventilation opening is formed in the furnace body or the furnace base. The high-efficiency combustion chamber has the advantage that the combustion efficiency is further improved by at least more than 3% through the improvement of the high-efficiency combustion chamber.

Description

Technical Field

[0001] The utility model relates to a combustion chamber and a stove using the combustion chamber, in particular to a high-efficiency combustion chamber and a stove using the high-efficiency combustion chamber. Background Art

[0002] The existing combustion chamber outlet fire is generally circular. In order to improve the combustion efficiency of the combustion chamber, a secondary air inlet is added to the combustion chamber. However, no matter how the combustion chamber efficiency is improved, the combustion efficiency cannot be further improved. In order to further improve the combustion efficiency, repeated experiments have found that the combustion efficiency can be improved by adding secondary air intake holes. The existing secondary air intake holes are already all over the inner surface of the combustion chamber, and the air intake volume of the secondary air intake holes cannot be further increased. It was accidentally discovered that the fire outlet is made into a three-dimensional fire outlet, and tertiary air intake holes are added on its surface, especially the tertiary air intake holes are added on the upper surface of the three-dimensional fire outlet. The gas that has not been fully burned at the fire outlet can be re-supplied with air to achieve combustion, which can greatly improve the combustion efficiency. Summary of the Invention

[0003] The utility model relates to a high-efficiency combustion chamber and a stove. By improving the high-efficiency combustion chamber, in particular by adding a three-dimensional fire outlet and arranging a second air inlet (actually a tertiary air inlet) thereon, the combustion efficiency is further improved.

[0004] The technical solution for achieving the purpose of the invention of the utility model is a high-efficiency combustion chamber comprising a primary combustion chamber and a secondary combustion chamber, wherein the upper end of the primary combustion chamber is provided with a primary opening, and the secondary combustion chamber is provided on the primary opening;

[0005] The secondary combustion chamber includes a hollow three-dimensional fire outlet, and the three-dimensional fire outlet is connected to the primary combustion chamber through at least one inclined surface;

[0006] The three-dimensional fire outlet is a double-layer structure or a multi-layer structure, and there is no second air inlet hole on the outer surface, inner surface and top surface of the three-dimensional fire outlet;

[0007] A first air inlet hole is provided in the primary combustion chamber, and a first air inlet hole or a second air inlet hole is provided on the inclined surface.

[0008] Furthermore, the surface area of ​​the three-dimensional fire outlet is smaller than the surface area of ​​the primary opening.

[0009] Furthermore, a feed chamber is provided on the side of the primary combustion chamber.

[0010] Furthermore, the primary combustion chamber is a rectangular parallelepiped, a cube or a cylinder.

[0011] Furthermore, the three-dimensional fire outlet is a rectangular fire outlet, a triangular fire outlet, a cylindrical fire outlet, or a polygonal fire outlet.

[0012] Furthermore, the long side of the rectangular fire outlet is equal to the length of at least one side of the primary opening.

[0013] Furthermore, the two sides of the three-dimensional fire outlet are connected to the primary combustion chamber through an inclined surface.

[0014] Furthermore, the lengths of the inclined surfaces on the two sides of the three-dimensional square fire outlet are inconsistent.

[0015] A stove with a high-efficiency combustion chamber comprises a stove body and a stove base connected to the lower part of the stove body, wherein a combustion chamber is provided in the stove body;

[0016] The combustion chamber includes a primary combustion chamber and a secondary combustion chamber. The upper end of the primary combustion chamber is provided with a primary opening, and the secondary combustion chamber is provided on the primary opening.

[0017] The three-dimensional fire outlet is a double-layer structure or a multi-layer structure, and there is no second air inlet hole on the outer surface, inner surface and top surface of the three-dimensional fire outlet;

[0018] A first air inlet hole is provided in the primary combustion chamber, and a first air inlet hole or a second air inlet hole is provided on the inclined surface;

[0019] An ash outlet is provided on the furnace base, and a material feeding port is provided on the furnace body;

[0020] The lower part of the primary combustion chamber is connected to the ash outlet, and the side of the primary combustion chamber is connected to the feed port;

[0021] The first air inlet is connected to a secondary vent, and the secondary vent is provided on the furnace body or the furnace base;

[0022] The second air inlet is communicated with a tertiary ventilation port, and the tertiary ventilation port is arranged on the furnace body or the furnace base.

[0023] The advantages of the utility model are:

[0024] 1. The secondary combustion chamber has a three-dimensional fire outlet, which can play a role in exhausting air, concentrating the flame head in the primary combustion chamber into the secondary combustion chamber, and leading the flame head out through the three-dimensional fire outlet. The three-dimensional fire outlet plays a role in exhausting air, concentrating the flame head in the primary combustion chamber into the secondary combustion chamber, and the first air inlet hole on the inclined surface of the primary combustion chamber and / or the secondary combustion chamber supplies air to the primary combustion chamber and / or the secondary combustion chamber to assist their combustion (which is equivalent to the secondary air intake in the prior art, and the gas entering from the lower part of the primary combustion chamber or the addition port is the primary air intake). The second air inlet hole on the three-dimensional fire outlet supplies air three times to the flame head passing through the three-dimensional fire outlet, especially the second air inlet hole on the top surface of the three-dimensional fire outlet supplies air to the flame head that has left the three-dimensional fire outlet and further burns it, so that the air is fully in contact with the flame head, and ultimately improves the combustion efficiency.

[0025] 2. The long side of the elongated fire outlet is equal to at least one side of the primary opening, so that the rectangular fire outlet is lengthened in one direction to the maximum extent, thereby expanding the surface area of ​​the inclined surface and increasing the number of air inlet holes.

[0026] 3. Both sides of the rectangular fire outlet are connected to the primary combustion chamber through an inclined surface. The large surface area of ​​the inclined surface is used to increase the number of first air inlet holes.

[0027] 4. The surface area of ​​the three-dimensional fire outlet is smaller than the surface area of ​​the opening, which can make the three-dimensional fire outlet more efficient in guiding the flame head. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a side view of the high-efficiency combustion chamber.

[0029] Figure 2 This is a front view of the high-efficiency combustion chamber.

[0030] Figure 3 It is a longitudinal cross-sectional view of the high-efficiency combustion chamber.

[0031] Figure 4 Schematic diagram of the barbecue grill structure.

[0032] Figure 5 A rectangular fire outlet is preferably used as a schematic diagram for a three-dimensional fire outlet.

[0033] As shown in the figure, there are a primary combustion chamber 1, a secondary combustion chamber 2, a three-dimensional fire outlet 21, a slope 22, a first air inlet 3, a feed chamber 4, a furnace body 5, a furnace base 6, an ash outlet 7, a second air inlet 8, and a feeding port 9. DETAILED DESCRIPTION

[0034] like Figure 1 、 2 As shown in Figure 3, a high-efficiency combustion chamber includes a primary combustion chamber 1 and a secondary combustion chamber 2. The upper end of the primary combustion chamber 1 is provided with a primary opening, and the secondary combustion chamber 2 is provided on the primary opening;

[0035] The secondary combustion chamber 2 includes a hollow three-dimensional fire outlet 21, and the three-dimensional fire outlet 21 is connected to the primary combustion chamber 1 through at least one inclined surface 22. Preferably, the surface area of ​​the three-dimensional fire outlet 21 is smaller than the surface area of ​​the primary opening;

[0036] The three-dimensional fire outlet 21 is a double-layer structure or a multi-layer structure, and a second air inlet 8 is provided on the inner surface, outer surface and top surface of the three-dimensional fire outlet 21. When in use, air enters the double-layer structure or multi-layer structure of the three-dimensional fire outlet 21 through the second air inlet 8 on the outer surface, and enters the hollow three-dimensional fire outlet 21 through the second air inlet 8 on the inner surface, and is discharged from the upper surface of the three-dimensional fire outlet 21 through the second air inlet 8 on the top surface and contacts the flame head passing through the three-dimensional fire outlet 21. A first air inlet 3 is provided in the primary combustion chamber 1 and the inclined surface 22.

[0037] Preferably, a feed chamber 4 is provided on the side of the primary combustion chamber 1 , and when in use, the feed chamber 4 adds fuel into the primary combustion chamber 1 .

[0038] Preferably, the primary combustion chamber 1 is a rectangular parallelepiped, a cube or a cylinder. Figure 3 As shown in FIG, the primary combustion chamber 1 is a rectangular parallelepiped.

[0039] Preferably, the three-dimensional fire outlet 21 is a rectangular fire outlet, a triangular fire outlet, a cylindrical fire outlet, or a polygonal fire outlet. Figure 5 What is disclosed is a rectangular fire outlet.

[0040] Preferably, the long side of the rectangular fire outlet 21 is equal to at least one side of the primary opening, such as Figure 1 As shown, the long side of the rectangular fire outlet 21 is equal to the width of the primary opening.

[0041] Preferably, both sides of the rectangular fire outlet 21 are connected to the primary combustion chamber 1 through an inclined surface 22 .

[0042] Preferably, the lengths of the inclined surfaces 22 on the two sides of the rectangular fire outlet 21 are inconsistent, which can change the angle of air intake and improve the air intake effect.

[0043] like Figure 4 In the embodiment, the stove comprises a stove body 5 and a stove base 6 connected to the lower part of the stove body 5, and a combustion chamber A is provided in the stove body 5;

[0044] The combustion chamber A includes a primary combustion chamber 1 and a secondary combustion chamber 2. The primary combustion chamber 1 is provided with a primary opening at its upper end, and the secondary combustion chamber 2 is provided on the primary opening.

[0045] The secondary combustion chamber 2 includes a hollow three-dimensional fire outlet 21, and the three-dimensional fire outlet 21 is connected to the primary combustion chamber 1 through at least one inclined surface 22. The surface area of ​​the three-dimensional fire outlet 21 is smaller than the surface area of ​​the primary opening.

[0046] The three-dimensional fire outlet 21 is a double-layer structure or a multi-layer structure, and there is no second air inlet 8 on the outer surface, inner surface, and top surface of the three-dimensional fire outlet;

[0047] The primary combustion chamber 1 is provided with a first air inlet 3, and the inclined surface 22 is provided with a first air inlet 3 or a second air inlet 8. Figure 4 The middle inclined surface 22 is a single layer and is provided with a first air inlet 3. In the actual structure, the inclined surface 22 can be made into a single layer, double layer or multi-layer structure as needed. The inclined surface 22 is provided with a first air inlet or a second air inlet 8;

[0048] An ash outlet 7 is provided on the furnace base 5, and a charging port 9 is provided on the furnace body 6;

[0049] The lower part of the primary combustion chamber 1 is connected to the ash outlet 7, and the side of the primary combustion chamber 1 is connected to the feeding port 8. The feeding port 8 can preferably be connected to the feed chamber 4, or directly connected to the first combustion chamber 1;

[0050] The first air inlet 3 is connected to the secondary ventilation port, and the secondary ventilation port is provided on the furnace body 5 or the furnace base 6. The secondary ventilation port can be provided separately on the furnace body 5 or the furnace base 6, or the ash outlet 7 can be used as the secondary ventilation port. Preferably, an air volume regulator can be provided on the tertiary ventilation port to adjust the ventilation volume of the tertiary ventilation port;

[0051] The second air inlet 8 is connected to the tertiary ventilation port, which is arranged on the furnace body 5 or the furnace base 6. The ash outlet 7 can also be used as the tertiary ventilation port. Preferably, an air volume regulator can be provided on the tertiary ventilation port to adjust the ventilation volume of the tertiary ventilation port.

[0052] Principle of use: fuel is added to the first combustion chamber 1 through the feeding port 8, and the feeding port 9 or the ash outlet 7 realizes the first air supply to assist the combustion in the first combustion chamber 1, and the first air inlet 3 on the first combustion chamber 1 intakes air into it to realize the second air supply, and the first air inlet 3 on the inclined surface 22 intakes air into it to realize the second air supply. If the inclined surface 22 is the second air inlet 8, it is the third air supply, and the air inlet 3 on the rectangular fire outlet 21 intakes air into it to realize the third air intake, and air is extracted through the three-dimensional fire outlet 21, so as to maximize the concentration of the flame head to the three-dimensional fire outlet 21 and pass through it. At the same time, the flame head is narrowed under the action of the three-dimensional fire outlet 21, and the gas entering from the second air inlet 8 on the three-dimensional fire outlet 21 is fully mixed with the flame head in the three-dimensional fire outlet 21, helping the gas in the three-dimensional fire outlet 21 to fully burn, and the second air inlet 8 at the top of the three-dimensional fire outlet 21 supplies air to the fire head that has passed through to help it further burn, thereby maximizing the combustion efficiency of the combustion chamber A.

[0053] Test results:

[0054] Under the condition that the internal volume of the combustion chamber is kept consistent and other structures are the same;

[0055] The first comparison group included three traditional stoves with combustion chambers that did not have three-dimensional fire outlets.

[0056] The second test group 1 was conducted on three stoves using the combustion chamber of the present invention, but without the second air inlet 8 at the top of the three-dimensional fire outlet;

[0057] The third group of experiments, group 2, took three furnaces using the combustion chamber of the present invention, and set a second air inlet 8 at the top of the three-dimensional fire outlet;

[0058] Each stove took 10 kilograms of firewood to burn and boil water, heating a fixed amount of 15 degrees Celsius water. After all the firewood was burned, the water temperature was measured. The test found that the average water temperature of the second group was 2.1% higher than that of the first group, and the average water temperature of the third group was 4.7% higher than that of the first group.

Claims

1. A high-efficiency combustion chamber, characterized by: The combustion chamber includes a primary combustion chamber and a secondary combustion chamber, wherein the upper end of the primary combustion chamber is provided with a primary opening, and the secondary combustion chamber is provided on the primary opening; The secondary combustion chamber includes a hollow three-dimensional fire outlet, and the three-dimensional fire outlet is connected to the primary combustion chamber through at least one inclined surface; The three-dimensional fire outlet is a double-layer structure or a multi-layer structure, and there is no second air inlet hole on the outer surface, inner surface and top surface of the three-dimensional fire outlet; A first air inlet hole is provided in the primary combustion chamber, and a first air inlet hole or a second air inlet hole is provided on the inclined surface.

2. A high-efficiency combustion chamber according to claim 1, characterized in that: The surface area of ​​the three-dimensional fire outlet is smaller than the surface area of ​​the primary opening.

3. A high-efficiency combustion chamber according to claim 1, characterized in that: A feed chamber is provided on the side of the primary combustion chamber.

4. A high-efficiency combustion chamber according to claim 1, characterized in that: The primary combustion chamber is a rectangular parallelepiped, a cube or a cylinder.

5. A high-efficiency combustion chamber according to claim 1, characterized in that: The three-dimensional fire outlet is a rectangular fire outlet, a triangular fire outlet, a cylindrical fire outlet, or a polygonal fire outlet.

6. A high-efficiency combustion chamber according to claim 5, characterized in that: The long side of the rectangular fire outlet is equal to the length of at least one side of the primary opening.

7. A high-efficiency combustion chamber according to claim 5, characterized in that: The two sides of the three-dimensional fire outlet are connected to the primary combustion chamber through an inclined surface.

8. A high-efficiency combustion chamber according to claim 7, characterized in that: The lengths of the inclined surfaces on two sides of the three-dimensional fire outlet are inconsistent.

9. A stove using the high-efficiency combustion chamber according to any one of claims 1 to 8, characterized in that: The fire-heating stove comprises a stove body and a stove base connected to the lower part of the stove body, and a combustion chamber is provided in the stove body; The combustion chamber includes a primary combustion chamber and a secondary combustion chamber. The upper end of the primary combustion chamber is provided with a primary opening, and the secondary combustion chamber is provided on the primary opening. The three-dimensional fire outlet is a double-layer structure or a multi-layer structure, and there is no second air inlet hole on the outer surface, inner surface and top surface of the three-dimensional fire outlet; A first air inlet hole is provided on the primary combustion chamber and the inclined surface; An ash outlet is provided on the furnace base, and a material feeding port is provided on the furnace body; The lower portion of the primary combustion chamber is connected to the ash outlet, and the side of the primary combustion chamber is connected to the feed port; The first air inlet is connected to a secondary vent, and the secondary vent is provided on the furnace body or the furnace base; The second air inlet is communicated with a tertiary ventilation port, and the tertiary ventilation port is arranged on the furnace body or the furnace base.

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